<template>
  <!-- 最外层的容器 -->
    <view class="my-settle-container">
      <!-- 全选区域 -->
        <label class="radio" @click="changeAllState">
          <radio color="#C00000" :checked="isFullCheck" /><text>全选</text>
        </label>
      
        <!-- 合计区域 -->
        <view class="amount-box">
          合计:<text class="amount">￥{{checkedGoodsAmount}}</text>
        </view>
      
        <!-- 结算按钮 -->
        <view class="btn-settle" @click="settlement">结算({{checkedCount}})</view>
    </view>
</template>

<script>
import { mapGetters, mapMutations, mapState } from 'vuex'
  export default {
    name:"my-settle",
    data() {
      return {
        
      };
    },
    computed:{
      ...mapGetters('m_cart', ['checkedCount', 'total', 'checkedGoodsAmount']),
      ...mapGetters('m_user', ['addstr']),
      ...mapState('m_user', ['token']),
      // 2. 是否全选
          isFullCheck() {
            return this.total === this.checkedCount
          },
    },
     methods: {
        // 2. 使用 mapMutations 辅助函数，把 m_cart 模块提供的 updateAllGoodsState 方法映射到当前组件中使用
        ...mapMutations('m_cart', ['updateAllGoodsState']),
        changeAllState() {
            // 修改购物车中所有商品的选中状态
            // !this.isFullCheck 表示：当前全选按钮的状态取反之后，就是最新的勾选状态
            this.updateAllGoodsState(!this.isFullCheck)
          },
          // 点击了结算按钮
          settlement() {
            // 1. 先判断是否勾选了要结算的商品
            if (!this.checkedCount) return uni.$showMsg('请选择要结算的商品！')
          
            // 2. 再判断用户是否选择了收货地址
            if (!this.addstr) return uni.$showMsg('请选择收货地址！')
          
            // 3. 最后判断用户是否登录了
            if (!this.token) return uni.$showMsg('请先登录！')
          }
      },
  }
</script>

<style lang="scss">
.my-settle-container {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 50px;
  background-color: white;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-left: 5px;
  font-size: 14px;

  .radio {
    display: flex;
    align-items: center;
  }

  .amount {
    color: #c00000;
  }

  .btn-settle {
    height: 50px;
    min-width: 100px;
    background-color: #c00000;
    color: white;
    line-height: 50px;
    text-align: center;
    padding: 0 10px;
  }
}
</style>
